Across
- 1. free fast moving particles with indefinite volume and shape
- 3. has mass or volume
- 7. negatively charged particle
- 8. the amount of space something takes up
- 10. no charge particle
- 11. free flowing matter with definite volume
Down
- 2. mass weight of an atom
- 4. a combination of different particles
- 5. positively charged particle
- 6. basic building block of every thing
- 9. hard rigid particle that only vibrates slightly